本文简单介绍了基于小波变换的图像分解与重构，在此基础上讨论了MATLAB语言环境下 图像压缩和图像融合的基本方法-This article briefly introduce the wavelet-based image decomposition and reconstruction, on the basis of discussion under the MATLAB language environment image compression and image fusion of

给定一信号，用db1小波对信号分别进行单尺度和三尺度分解，求出各层的低频和高频系数，并进行重构。-Given signal db1 wavelet signal single-scale and scale decomposition, obtained layers of low-frequency and high-frequency coefficients to reconstruct.

通过双正交小波对图像进行分解，后去噪并重构出图像，使得图像效果更加清晰-The image is decomposed by biorthogonal wavelet, then the image is denoised and reconstructed

对信号分析实现同步挤压小波，能进行时频分析，进行信号时频分解和重构，时频分析效果很好(Synchrosqueezed wavelet transforms toolbox V1.0)